Aleri J W, Nguhiu-Mwangi J, Mogoa E M and Mulei C M 2012: Welfare of dairy cattle in the smallholder (zero-grazing) production systems in Nairobi and its environs. Livestock Research for Rural Development. Volume 24, Article #159. Retrieved , from http://www.lrrd.org/lrrd24/9/aler24159.htm